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Phosphorus, Sulfur, and Silicon and the Related Elements Volume 190, 2015 - Issue 7
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Original Articles

Zeolite H-Sdusy Powder (Cbv720) as a Recyclable Catalyst for an Efficient Thiocyanation of Aromatic and Heteroaromatic Compounds in Acetonitrile

V. Sudhakar CharyDepartment of Chemistry, Osmania University, Hyderabad, 500 007, T.S, India
,
G. KrishnaiahDepartment of Chemistry, Osmania University, Hyderabad, 500 007, T.S, India
,
M. Satish KumarDepartment of Chemistry, Osmania University, Hyderabad, 500 007, T.S, India
&
K. C. RajannaDepartment of Chemistry, Osmania University, Hyderabad, 500 007, T.S, IndiaCorrespondence[email protected]
Pages 1146-1153 | Received 17 Aug 2014, Accepted 03 Oct 2014, Published online: 25 Jul 2015
 
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GRAPHICAL ABSTRACT

Abstract

Thiocyanation of various aromatic and heteroaromatic compounds has been studied using Zeolite H-SDUSY Powder (CBV720) as catalyst and ammonium thiocyanate (NH4SCN) as thiocyanation reagent in acetonitrile medium. Reactions afforded good yields of products under stirred conditions at reflux temperature. Reactions underwent enhancements under sonication (using an ultrasonic probe of 24 kHz frequency) and microwave irradiation. The use of ultrasound decreased the reaction times from (7-12 h) to few minutes (70-150 min). The use of microwave irradiation much more effectively enhanced the reaction rates than sonicated and conventional protocols used in this study.

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